The 3D viewer was only seeing points inside the ROI rectangle used for the plane fit. Now /fit also fetches nuwa.pointcloud (step=4, full frame), flips to CV frame, and returns it as points_camera (downsampled to max_preview_points). The user sees the entire scene with red = excluded by the below-plane filter, cyan = kept. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>